7949240977 has 2 divisors, whose sum is σ = 7949240978. Its totient is φ = 7949240976.

The previous prime is 7949240941. The next prime is 7949240993. The reversal of 7949240977 is 7790429497.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 4039365136 + 3909875841 = 63556^2 + 62529^2 .

It is a cyclic number.

It is not a de Polignac number, because 7949240977 - 2¹⁹ = 7948716689 is a prime.

It is a super-2 number, since 2×7949240977² (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (7949240917) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3974620488 + 3974620489.

It is an arithmetic number, because the mean of its divisors is an integer number (3974620489).

Almost surely, 2^7949240977 is an apocalyptic number.

It is an amenable number.

7949240977 is a deficient number, since it is larger than the sum of its proper divisors (1).

7949240977 is an equidigital number, since it uses as much as digits as its factorization.

7949240977 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 8001504, while the sum is 58.

The square root of 7949240977 is about 89158.5160094088. The cubic root of 7949240977 is about 1995.7611036426.

The spelling of 7949240977 in words is "seven billion, nine hundred forty-nine million, two hundred forty thousand, nine hundred seventy-seven".